std::basic_fstream::basic_fstream

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C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++0x feature) Atomic operations library (C++0x feature) Thread support library (C++0x feature)
Input/output library
basic_streambuf basic_filebuf basic_stringbuf ios_base basic_ios basic_istream basic_ostream basic_iostream basic_ifstream basic_ofstream basic_fstream basic_istringstream basic_ostringstream basic_stringstream C-style I/O
std::basic_fstream
Member functions basic_fstream::basic_fstream basic_fstream::operator= basic_fstream::swap basic_fstream::rdbuf File operations basic_fstream::is_open basic_fstream::open basic_fstream::close

​basic_fstream( const char *filename,                ios_base::openmode mode = ios_base::in|ios_base::out );​	(1)
​basic_fstream( const string &filename,                                                  ios_base::openmode mode = ios_base::in|ios_base::out );​	(2)	(C++0x)
​basic_fstream( basic_fstream&& other );​	(3)	(C++0x)

Constructs new file stream.

1-2) Associates the stream with a file after the constriction. Calls ​clear()​ on success or ​setstate(failbit)​ on failure.

The first version effectively calls ​rdbuf()->open(filename, mode)​.

The second version effectively calls ​open(filename.c_str(), mode)​.

3) Move constructor. Constructs the file stream with the state of other using move semantics.

Parameters

filename	-	the name of the file to be opened
mode	-	specifies stream open mode. It is bitmask type, the following constants are defined: Constant Explanation app seek to the end of stream before each write binary open in binary mode in open for reading out open for writing trunc discard the contents of the stream when opening ate seek to the end of stream immediately after open
other	-	another file stream to use as source

Example

This section is incomplete

See also

open	opens a file and associates it with the stream (public member function)